The present disclosure is related to computing devices, systems, and methods for a new task-engine system that connects to a variety of task-interaction providers, enabling a user to use any one of multiple task-interaction providers to create and complete tasks within a workflow. That is, the connection to a variety of task-interaction providers allows a user to interact with the workflow through any of the task-interaction providers and create and/or complete any number of tasks in the workflow. The task-engine system may also update the creation and/or completion of a workflow task in all other task-interaction providers, such that all users may be aware of, or notified of, the current state of the workflow through any of the task-interaction providers.